In the Diversity Visa (DV) Lottery application, you will be asked to provide your mailing address. The mailing address is the place where you will receive mail, and it is important to provide an accurate address. The form for the DV Lottery is constructed according to the principles and lifestyle in America, so when they say "mailing address," they mean the place where you will be receiving mail. In the United States, there are post offices and boxes where you can receive mail. It is desirable to choose the address of your primary residence. The mailing address is an important piece of information to provide, but it has no particular impact on the selection or invitation for the visa interview.